JPH05319384A - Water jet propeller - Google Patents

Water jet propeller

Info

Publication number
JPH05319384A
JPH05319384A JP12187292A JP12187292A JPH05319384A JP H05319384 A JPH05319384 A JP H05319384A JP 12187292 A JP12187292 A JP 12187292A JP 12187292 A JP12187292 A JP 12187292A JP H05319384 A JPH05319384 A JP H05319384A
Authority
JP
Japan
Prior art keywords
duct
steering
water
nozzle
reverse
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12187292A
Other languages
Japanese (ja)
Inventor
Hiroshi Komiya
浩 小宮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP12187292A priority Critical patent/JPH05319384A/en
Publication of JPH05319384A publication Critical patent/JPH05319384A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To prevent a water flow from colliding with a stern at the time of going astern by providing a reversing duct for guiding the water flow forward at a steering duct communicated with a nozzle laid at the stern, and further providing the reversing duct with an astern duct capable of free oscillation on the pivotal axial line of the steering duct. CONSTITUTION:In the construction where water sucked through a sea chest at a ship's bottom is pressurized on the rotation of a pump impeller and jetted from a nozzle 27 for providing thrust, a steering duct 30 is so fitted to the aft end of the nozzle 27 as to be capable of free oscillation port and starboard around a pin 29. Also, a deflector arm 32 capable of free turn in a vertical direction around a pin 33 is fitted at the aft end of the duct 30 and a deflector 31 for selectively covering the aft end opening of the duct 30 is connected to the arm 32. In addition, a reversing duct 35 is provided at the aft lower side of the duct 30 and an astern duct 39 is pivotally supported with a pin 38 in such a way as capable of free turn on a bearing 37 at the forward end of an arm 36 projected downward from the nozzle 27 and at the same axial line as the pin 29. According to this construction, a jet water flow is prevented from colliding with a stern at the time of going astern.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は高速船艇などに設けられ
るウォータジェット推進機に係り、特に前進からのブレ
ーキあるいは後進のためのリバース機構を改良したウォ
ータジェット推進機に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water jet propulsion machine provided in a high-speed watercraft or the like, and more particularly to a water jet propulsion machine having an improved reverse mechanism for braking from the forward direction or reverse.

【0002】[0002]

【従来の技術】一般に、ウォータジェット推進機は図5
に示すように、船底1に開口した取水口2から取り入れ
た水をポンプケーシング3内に導く導水ダクト4と、ポ
ンプケーシング3の内部で回転するポンプ羽根車5と、
このポンプ羽根車5の出口側に設けられたディフューザ
6と、水流を噴射するノズル7とを有している。
2. Description of the Related Art Generally, a water jet propulsion machine is shown in FIG.
As shown in FIG. 2, a water guide duct 4 that guides water taken in from an intake port 2 opened to the bottom 1 into a pump casing 3, a pump impeller 5 that rotates inside the pump casing 3,
It has a diffuser 6 provided on the outlet side of the pump impeller 5 and a nozzle 7 for injecting a water flow.

【0003】また、ウォータジェット推進機には、通常
船艇の方向を変えるための操舵機構や前進からのブレー
キあるいは後進のためのリバース機構が設けられてい
る。図6は操舵機構およびリバース機構を併設した従来
のウォータジェット推進機の一例を示し、このウォータ
ジェット推進機はノズル7の後端部にピン8などの取付
手段を介して操舵ダクト9が左右(水平)方向に回動
(首振り)可能に設けられ、この操舵ダクト9にピン1
0などの取付手段を介してデフレクター11が上下方向
に回動可能に設けられ、且つ操舵ダクト9下部に後進用
の反転ダクト12が開設されている。
Further, the water jet propulsion machine is usually provided with a steering mechanism for changing the direction of the watercraft and a reverse mechanism for braking from the forward direction or for the reverse direction. FIG. 6 shows an example of a conventional water jet propulsion machine equipped with a steering mechanism and a reverse mechanism. In this water jet propulsion machine, a steering duct 9 is provided at the rear end of a nozzle 7 through a mounting means such as a pin 8 ( The steering duct 9 is provided with a pin 1 so as to be rotatable (pivoting) in a horizontal direction.
A deflector 11 is provided rotatably in the vertical direction through a mounting means such as 0, and a reverse duct 12 for reverse travel is provided below the steering duct 9.

【0004】そして、操舵ダクト9の左右の回動により
操舵が行われ、またデフレクター11により操舵ダクト
9後方への噴出水流が閉鎖され、反転ダクト12から前
方への水流噴射により前進からのブレーキあるいは後進
が行われる。
Steering is performed by turning the steering duct 9 to the left and right, and the jetted water flow to the rear of the steering duct 9 is closed by the deflector 11, and water is jetted forward from the reversing duct 12 to brake or move forward. The reverse is performed.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、上記従
来のウォータジェット推進機では、停止時に比較して航
行時に船体が水面から大きく浮上する表面滑走挺(SE
S)に適用する場合、図7に示すようにウォータジェッ
ト推進機の中心が水面から高くなり、そのままでは後進
時に反転ダクト12から噴出するジェット水流が船尾に
衝突し、後進スラストを減じることとなる。
However, in the above-mentioned conventional water jet propulsion machine, the surface hull (SE) in which the hull floats above the water surface during sailing as compared to when it is stopped
When applied to S), the center of the water jet propulsion machine becomes higher than the water surface as shown in FIG. 7, and if it is left as it is, the jet water flow ejected from the reversal duct 12 will collide with the stern at the time of reverse movement and reduce the reverse thrust. ..

【0006】これを回避するため、従来では操舵ダクト
9の位置を後方にずらすか、あるいは反転ダクト12の
先端を下方まで延ばし、その出口端をジェット水流が前
方へ噴射するように屈曲させればよい。しかし、前者で
は船尾からの操舵ダクト9の突き出し幅が大きくなり、
後者では操舵ダクト9の軸受部が支持する荷重が大きく
なるなどの構造上の問題点があった。
In order to avoid this, conventionally, the position of the steering duct 9 is shifted rearward, or the tip of the reversing duct 12 is extended downward and the outlet end thereof is bent so as to jet the jet water flow forward. Good. However, in the former case, the protruding width of the steering duct 9 from the stern becomes large,
In the latter case, there are structural problems such as an increase in the load supported by the bearing portion of the steering duct 9.

【0007】本発明は上述した事情を考慮してなされた
もので、構造上の無理をなくし、且つ後進時にジェット
水流が船尾に衝突しないようにし、逆進スラストを減少
可能なウォータジェット推進機を提供することを目的と
する。
The present invention has been made in consideration of the above-mentioned circumstances, and provides a water jet propulsion machine capable of reducing reverse thrust by eliminating structural problems and preventing jet water flow from colliding with the stern during reverse travel. The purpose is to provide.

【0008】[0008]

【課題を解決するための手段】本発明に係るウォータジ
ェット推進機は、上述した課題を解決するために、船底
に開口した取水口からポンプケーシング内に水を導き、
このポンプケーシング内の羽根車により水を加圧し、船
尾に設けたノズルから噴射して推力を得るウォータジェ
ット推進機において、上記ノズルと連通し左右に回動可
能に設けられた操舵ダクトと、この操舵ダクトの後端開
口部を選択的に覆うデフレクターと、上記操舵ダクトに
取り付けられ水流を前方にガイドする反転ダクトと、上
記操舵ダクトの軸受と同一軸上の別の軸受で軸支され上
部が上記反転ダクトと連結されるとともに、下部が航行
時に水面近傍で船首方向に開口する後進用ダクトとを備
えたものである。
In order to solve the above-mentioned problems, a water jet propulsion machine according to the present invention introduces water into a pump casing from a water intake opening at the bottom of a ship,
In a water jet propulsion machine in which water is pressurized by an impeller inside the pump casing and jetted from a nozzle provided at the stern to obtain thrust, a steering duct that is connected to the nozzle and is rotatable left and right, A deflector that selectively covers the rear end opening of the steering duct, a reversing duct that is attached to the steering duct and guides the water flow forward, and a bearing that is axially supported by another bearing on the same axis as the bearing of the steering duct. The reverse duct is connected to the reversing duct, and the lower part of the reverse duct opens in the bow direction near the water surface during navigation.

【0009】[0009]

【作用】上記の構成を有する本発明において、操舵ダク
トおよび後進用ダクトは同一軸上の別の軸受で軸支され
ているため、軸受1つ当たりの荷重分散が図られる。ま
た、操舵ダクトと後進用ダクトは反転ダクトを介して連
結されているため、後進用ダクトは操舵ダクトと連動す
る。
In the present invention having the above structure, since the steering duct and the reverse drive duct are rotatably supported by different bearings on the same shaft, the load per bearing can be distributed. Moreover, since the steering duct and the reverse duct are connected via the reversing duct, the reverse duct works in conjunction with the steering duct.

【0010】したがって、前進時にはデフレクターが作
動せず、操舵ダクトの後端開口部は開いたままの状態に
あり、ジェット水流は操舵ダクトの後方に噴出され、後
進用ダクト内にはジェット水流は流入しない。ここで、
舵操作を行う場合、後進用ダクトは上部が反転ダクトに
連結されているため、操舵ダクトの軸受と同一軸上にあ
る別の軸受を中心として操舵ダクトの左右の動きに応じ
て単に回動するだけである。
Therefore, the deflector does not operate during forward movement, the rear end opening of the steering duct remains open, the jet water flow is ejected to the rear of the steering duct, and the jet water flow flows into the reverse passage duct. do not do. here,
When performing rudder operation, the reverse duct has its upper part connected to the reversing duct, so it simply rotates around another bearing on the same axis as the steering duct, depending on the left / right movement of the steering duct. Only.

【0011】また、前進からのブレーキあるいは後進時
には、デフレクターが操舵ダクトの後端開口部を塞ぐた
め、ジェット水流は反転ダクトを経て後進用ダクト上部
に流入し、船首方向に向いた開口部から噴出する。この
場合、舵操作を行うと、前進時と同様に反転ダクトも回
転するため、開口部の向きが変わり、そこから噴出する
ジェット水流の方向も変化して船艇の進行方向が変わ
る。
Further, when braking from the forward direction or in reverse, the deflector blocks the rear end opening of the steering duct, so that the jet water flows through the reversing duct into the upper part of the reverse duct, and jets out from the opening facing in the bow direction. To do. In this case, when the rudder operation is performed, the reversing duct also rotates as when moving forward, so that the direction of the opening changes, the direction of the jet water jet spouting therefrom also changes, and the traveling direction of the boat changes.

【0012】[0012]

【実施例】以下、本発明に係るウォータジェット推進機
の一実施例を図1〜図4に基づいて説明する。図1は要
部の側面形状を、図2はウォータジェット推進機の全体
構成をそれぞれ示している。また、図3および図4は前
進時および後進時の状態を示している。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a water jet propulsion machine according to the present invention will be described below with reference to FIGS. FIG. 1 shows a side surface shape of a main part, and FIG. 2 shows an overall configuration of a water jet propulsion machine. Further, FIGS. 3 and 4 show states during forward movement and during reverse movement.

【0013】本実施例のウォータジェット推進機は、図
2に示すように船底21に開口した取水口22から取入
れた水をポンプケーシング23内に導く導水ダクト24
と、ポンプケーシング23の内部で回転するポンプ羽根
車25と、このポンプ羽根車25の出口側に設けられた
ディフューザ26と、水流を噴射するノズル27とを有
している。
The water jet propulsion machine of the present embodiment, as shown in FIG. 2, introduces the water taken in through the water intake port 22 formed in the bottom 21 into the pump casing 23.
A pump impeller 25 rotating inside the pump casing 23, a diffuser 26 provided on the outlet side of the pump impeller 25, and a nozzle 27 for injecting a water flow.

【0014】また、ノズル27の後端部には、図1に示
すようにピン29などの取付手段を介して左右(水平)
方向に回動(首振り)動作する操舵ダクト30が設けら
れ、この操舵ダクト30は操舵用アクチュエータ28に
より駆動される。この操舵ダクト30の後部にはピン3
3などの取付手段を介して上下方向に回動動作するデフ
レクターアーム32が設けられ、このデフレクターアー
ム32は後進用アクチュエータ34により駆動される。
そして、デフレクターアーム32には操舵ダクト30の
後端開口部を選択的に覆うデフレクター31が取り付け
られている。
Further, at the rear end of the nozzle 27, as shown in FIG. 1, left and right (horizontal) via mounting means such as a pin 29.
A steering duct 30 that rotates (pivots) in the direction is provided, and the steering duct 30 is driven by the steering actuator 28. Pin 3 is provided at the rear of the steering duct 30.
A deflector arm 32 that pivots in the vertical direction is provided via a mounting means such as 3. The deflector arm 32 is driven by a reverse drive actuator 34.
A deflector 31 is attached to the deflector arm 32 to selectively cover the rear end opening of the steering duct 30.

【0015】さらに、操舵ダクト30の後部下側には反
転ダクト35が設けられている。また、ノズル27から
下方へ突き出たアーム36の先端には、操舵ダクト30
の軸受と同一軸上に位置する軸受37が上下2つ取り付
けられ、これらの軸受37にはピン38により後進用ダ
クト39が回動自在に軸支されている。この後進用ダク
ト39には中間部にピン38を取り付けるためのアーム
40が設けられ、後進用ダクト39の上部は操舵ダクト
30の後部下側の反転ダクト35の開口部に連通してフ
ランジ41で締結するように屈曲しており、また後進用
ダクト39の下部は後進用ダクト39内を流れる水が前
方の空中へ噴出するように船首方向に向けて屈曲してお
り、その先端部は航行時に水面近傍で開口している。次
に、本実施例の作用について説明する。
Further, a reversing duct 35 is provided below the rear portion of the steering duct 30. Further, the steering duct 30 is attached to the tip of the arm 36 protruding downward from the nozzle 27.
The upper and lower bearings 37 are mounted on the same axis as the bearing of FIG. 1, and a reverse duct 39 is rotatably supported by pins 38 on these bearings 37. An arm 40 for mounting the pin 38 is provided at an intermediate portion of the reverse duct 39, and an upper portion of the reverse duct 39 communicates with an opening of the reversing duct 35 on the lower rear side of the steering duct 30 by a flange 41. It is bent so as to be fastened, and the lower part of the reverse duct 39 is bent toward the bow so that the water flowing in the reverse duct 39 is jetted out into the air in the forward direction. It opens near the water surface. Next, the operation of this embodiment will be described.

【0016】表面滑走挺(SES)は、停止時に比較し
て航行時に船体が水面から大きく浮上しているが、本実
施例においても停止時にはウォータジェット推進機の中
心レベル程度まで水没している。そして、発進時にはポ
ンプケーシング23内のポンプ羽根車25を図示しない
原動機により回転させ、船底21に設けた取水口22か
らポンプケーシング23内に水を導入し、この導入した
水をポンプ羽根車25により加圧して船尾に設けたノズ
ル27から後方へ噴射する。これにより、発進とともに
船艇は浮上し操舵装置や後進装置も水面上に露呈し通常
の航行状態となる。
In surface gliding (SES), the hull floats above the surface of the water during navigation as compared to when it is stopped, but in this embodiment as well, it is submerged to the level of the center of the water jet propulsion machine when stopped. When the vehicle starts, the pump impeller 25 in the pump casing 23 is rotated by a prime mover (not shown) to introduce water into the pump casing 23 from the water intake 22 provided on the bottom 21 of the boat. It is pressurized and jetted backward from the nozzle 27 provided at the stern. As a result, the boat floats as the vehicle starts moving, and the steering device and the reverse device are exposed on the surface of the water, so that the boat is in a normal navigation state.

【0017】この航行状態において、前進時に進路変更
を行う場合、本実施例では図示しない操舵制御装置など
の指令により、操舵用アクチュエータ28を作動させ
る。すると、ノズル27の後端部にピン29などの取付
手段を介して水平方向に回動動作するように設けられた
操舵ダクト30が、ピン29を回転中心として左または
右方向へ必要なだけ動き、ノズル27から後方へ噴射す
るジェット水流を偏向させて船艇の進路方向を変える力
を得て、船艇の舵を取る。
In this navigation state, when the course is changed when the vehicle moves forward, the steering actuator 28 is operated by a command from a steering control device (not shown) in this embodiment. Then, the steering duct 30, which is provided at the rear end portion of the nozzle 27 so as to rotate in the horizontal direction via the attachment means such as the pin 29, moves leftward or rightward about the pin 29 as the center of rotation as necessary. , The force of changing the course direction of the boat is obtained by deflecting the jet water flow jetted backward from the nozzle 27 to steer the boat.

【0018】このような前進時における操舵時にあって
は、図3に示すように操舵ダクト30の後部にピン33
などの取付手段を介して上下方向に回動動作するように
設けられたデフレクターアーム32は作動しないため、
操舵ダクト30の後端開口部は開いたままの状態にあ
り、ジェット水流は操舵ダクト30後方の空中へ噴出
し、後進用ダクト39内にジェット水流は流入せず、後
進用ダクト39は何等作用しない。次に、前進時のブレ
ーキあるいは後進時の作用を説明する。
At the time of steering during such a forward movement, as shown in FIG. 3, a pin 33 is provided at the rear portion of the steering duct 30.
Since the deflector arm 32, which is provided so as to rotate in the vertical direction via the attachment means such as, does not operate,
The rear end opening of the steering duct 30 is still open, the jet water flow jets out into the air behind the steering duct 30, the jet water flow does not flow into the reverse duct 39, and the reverse duct 39 does nothing. do not do. Next, the operation during forward braking or the operation during reverse traveling will be described.

【0019】前進からブレーキあるいは後進動作に移行
する場合には、図4に示すように後進用アクチュエータ
34によりデフレクターアーム32が前進時の位置から
下方へ押し下げられ、デフレクターアーム32に取り付
けられたデフレクター31が操舵ダクト30の後端開口
部を塞ぐ。すると、ノズル27から噴射するジェット水
流はデフレクター31および反転ダクト35により流れ
の方向を変え、後進用ダクト39の上部から流入し、水
面近くの船首方向に向いた開口部から前方の空中へ噴出
する。
In the case of shifting from forward movement to braking or backward movement, the backward movement actuator 34 pushes the deflector arm 32 downward from the forward movement position, as shown in FIG. 4, and the deflector 31 attached to the deflector arm 32. Closes the rear end opening of the steering duct 30. Then, the jet water flow jetted from the nozzle 27 changes its direction by the deflector 31 and the reversing duct 35, flows in from the upper part of the reverse duct 39, and jets out to the air in the forward direction from the opening portion facing the bow near the water surface. ..

【0020】このようにして、ウォータジェット推進機
は前進時とは逆のスラストを発生し、船艇にはブレーキ
がかかり停止し、次いで後進航行を行う。この場合、舵
操作を行うと、前進時と同様に操舵ダクト30の左右へ
の動きに連動して後進用ダクト39も回動するため、開
口部の向きが変わり、そこから噴出するジェット水流の
方向も変わり、船艇の進行方向が変わる。
In this way, the water jet propulsion machine generates thrust which is the reverse of that when moving forward, the boat is braked and stopped, and then backward travel is performed. In this case, when the rudder operation is performed, the backward movement duct 39 is also rotated in conjunction with the left and right movements of the steering duct 30 as in the forward movement, so that the direction of the opening is changed and the jet water flow ejected from the opening is changed. The direction also changes, and the traveling direction of the boat changes.

【0021】このように本実施例によれば、前進時およ
び後進時のいずれの航行状態にあっても、後進用ダクト
39自体は水面に触れないように適切な形状、長さに形
成されているので、抵抗になることはない。そして、後
進時にあっては、後進用ダクト39の開口部が水面近傍
の船首方向に向いているため、前方に噴出するジェット
水流は船艇後尾に衝突することなく、水面に確実に散水
される。
As described above, according to the present embodiment, the reverse duct 39 itself is formed in an appropriate shape and length so as not to come into contact with the water surface in any of the navigation states during forward movement and reverse movement. So there is no resistance. When the vehicle is in reverse, the opening of the reverse duct 39 is directed toward the bow near the water surface, so that the jet water flow jetting forward is reliably sprayed on the water surface without colliding with the tail of the boat. ..

【0022】[0022]

【発明の効果】以上説明したように、本発明に係るウォ
ータジェット推進機によれば、操舵ダクトおよび後進用
ダクトは同一軸上の別の軸受で軸支されているため、軸
受1つ当たりの荷重分散が図られ、また後進用ダクトは
上部を反転ダクトに連結し、下部を航行時に水面近傍で
船首方向に開口するように構成したので、停止時と航行
時とで水面に対する船艇の高さが大きく変わる表面滑走
挺(SES)において、ウォータジェット推進機の中心
が水面から高くなっても後進時にジェット水流が船尾に
衝突することがなく、後進スラストの減少を防止するこ
とができる。
As described above, according to the water jet propulsion device of the present invention, since the steering duct and the reverse drive duct are rotatably supported by the different bearings on the same shaft, one bearing is used. The load is distributed, and the reverse duct is connected to the reverse duct at the upper part, and the lower part is configured to open in the bow direction near the water surface when navigating, so the height of the ship relative to the water surface at the time of stopping and navigating In the surface gliding (SES) in which the water surface greatly changes, even if the center of the water jet propulsion machine rises above the water surface, the jet water flow does not collide with the stern at the time of reverse travel, and it is possible to prevent a reduction in reverse thrust.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係るウォータジェット推進機の一実施
例を示す要部の側面図。
FIG. 1 is a side view of essential parts showing an embodiment of a water jet propulsion device according to the present invention.

【図2】図1のウォータジェット推進機の全体構成を示
す縦断面図。
FIG. 2 is a vertical cross-sectional view showing the overall configuration of the water jet propulsion device shown in FIG.

【図3】図1における操舵ダクトの前進時の状態を示す
側面図。
FIG. 3 is a side view showing a state when the steering duct in FIG. 1 is moving forward.

【図4】図1における操舵ダクトの後進時の状態を示す
側面図。
FIG. 4 is a side view showing a state when the steering duct in FIG.

【図5】従来のウォータジェット推進機を示す縦断面
図。
FIG. 5 is a vertical cross-sectional view showing a conventional water jet propulsion machine.

【図6】図5のウォータジェット推進機の要部を示す側
面図。
6 is a side view showing a main part of the water jet propulsion device of FIG.

【図7】従来の後進時の状態を示す側面図。FIG. 7 is a side view showing a conventional state when the vehicle is moving backward.

【符号の説明】[Explanation of symbols]

21 船底 22 取水口 23 ポンプケーシング 24 導水ダクト 25 ポンプ羽根車 26 ディフューザ 27 ノズル 28 操舵用アクチュエータ 30 操舵用ダクト 31 デフレクター 32 デフレクターアーム 34 後進用アクチュエータ 35 反転ダクト 37 軸受 39 後進用ダクト 21 Ship Bottom 22 Water Intake 23 Pump Casing 24 Water Transfer Duct 25 Pump Impeller 26 Diffuser 27 Nozzle 28 Steering Actuator 30 Steering Duct 31 Deflector 32 Deflector Arm 34 Reverse Actuator 35 Inverting Duct 37 Bearing 39 Backward Duct

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 船底に開口した取水口からポンプケーシ
ング内に水を導き、このポンプケーシング内の羽根車に
より水を加圧し、船尾に設けたノズルから噴射して推力
を得るウォータジェット推進機において、上記ノズルと
連通し左右に回動可能に設けられた操舵ダクトと、この
操舵ダクトの後端開口部を選択的に覆うデフレクター
と、上記操舵ダクトに取り付けられ水流を前方にガイド
する反転ダクトと、上記操舵ダクトの軸受と同一軸上の
別の軸受で軸支され上部が上記反転ダクトと連結される
とともに、下部が航行時に水面近傍で船首方向に開口す
る後進用ダクトとを備えたことを特徴とするウォータジ
ェット推進機。
1. A water jet propulsion machine in which water is introduced into a pump casing from a water intake opening at the bottom of the ship, the impeller in the pump casing pressurizes the water, and the water is ejected from a nozzle provided at the stern to obtain thrust. A steering duct that is connected to the nozzle and is rotatable left and right, a deflector that selectively covers a rear end opening of the steering duct, and a reversing duct that is attached to the steering duct and guides a water flow forward. , A steering duct is supported by another bearing on the same axis as the bearing of the steering duct, the upper part is connected to the reversing duct, and the lower part is provided with a reverse duct that opens in the bow direction near the water surface during navigation. Characteristic water jet propulsion machine.
JP12187292A 1992-05-14 1992-05-14 Water jet propeller Pending JPH05319384A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12187292A JPH05319384A (en) 1992-05-14 1992-05-14 Water jet propeller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12187292A JPH05319384A (en) 1992-05-14 1992-05-14 Water jet propeller

Publications (1)

Publication Number Publication Date
JPH05319384A true JPH05319384A (en) 1993-12-03

Family

ID=14822018

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12187292A Pending JPH05319384A (en) 1992-05-14 1992-05-14 Water jet propeller

Country Status (1)

Country Link
JP (1) JPH05319384A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108755642A (en) * 2018-08-10 2018-11-06 温州大学 Floater processing unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108755642A (en) * 2018-08-10 2018-11-06 温州大学 Floater processing unit

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